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A001577 as a simple table

n a(n)
1 1
2 1
3 2
4 6
5 60
6 2880
7 2246400
8 135862272000
9 10376834265907200000
10 77540115374348238323712000000000
11 71611262431705169979126571320506685849600000000000000
12 799595359352229378487949660335170674324575940302246074414582988800000000000000000000000 

[1,1,2,6,60,2880,2246400,135862272000,
 10376834265907200000,
 77540115374348238323712000000000,
 71611262431705169979126571320506685849600000000000\
 000,
 79959535935222937848794966033517067432457594030224\
 6074414582988800000000000000000000000]

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Last modified April 23 15:20 EDT 2024. Contains 371916 sequences. (Running on oeis4.)